Group and Sort cloneable fields and give a heading

Hi,

I have a MB Group which has clonable fields. Each clonable field can get a certain category (which I also made with the custom taxonomies). The purpose of this is so that people can just keep cloning fields and add a category, to get a list of items.

My question: is there a way to group each clonable field by category and give that group the name of the category without having to hardcode the title? It could be that there are no items in a certain category, so the title should then not appear.

Thanks beforehand!
Steven